8 Years Building E-Commerce Businesses. And Counting.
Alex has built businesses across e-commerce and logistics, started a fulfillment company from his garage, sold it, and is now building new businesses while advising other founders.
Alex Doren — Entrepreneur. Operator. Advisor.
My Story
From a Garage to Building Again
Alex started in the U.S. with a few hundred dollars, built and sold Tetris Prep, and is now building his next ventures.
Started Tetris Prep from his garage in 2019
Sold the business in 2025
Now building LeoFormula, Fulfillment Box, and My Brand Alchemy
What I am building now
What I am Building Now
The Journey
From eBay to Exit — and Building Again
2016 — Arrived in the U.S.
Alex came to the United States with a few hundred dollars.
Starting Out
Worked regular jobs including moving work and Uber.
eBay — First Business
Started selling on eBay, which became the beginning of his entrepreneurial journey.
Building in E-commerce
Built and operated multiple businesses, including a weights-related business, Amazon businesses, Amazon wholesale, and a garden tent / garden dome brand. Developed experience selling through Amazon, Shopify, and Etsy.
2019 — Tetris Prep
Started Tetris Prep, a fulfillment business, from his garage.
Building Tetris Prep
Grew the fulfillment operation.
2025 — Exit
Sold Tetris Prep.
Today — Building Again
Building LeoFormula, partner in Fulfillment Box, and owner of My Brand Alchemy.
